Deoxynivalenol, commonly known as DON or vomitoxin, is a mycotoxin produced by certain molds, particularly Fusarium graminearum. It often contaminates crops like wheat and corn, especially under warm and humid conditions. This toxin can pose health risks to both humans and animals when ingested. Exposure to deoxynivalenol can lead to various symptoms, including nausea, vomiting, and diarrhea. It is regulated in food and feed products to ensure safety. Monitoring and controlling its levels in agricultural products are essential to prevent potential health issues related to its consumption.